Cheapest return IAD–CUN flights, December

AirHint found the following cheapest return flights from Washington (IAD) to Cancun (CUN) in December 2026 (see full year).

Return flights

01 Dec - 09 Dec United direct
01 Dec - 10 Dec United direct
04 Dec - 15 Dec United direct
04 Dec - 16 Dec United direct
05 Dec - 15 Dec United direct
05 Dec - 16 Dec United direct
05 Dec - 17 Dec United direct
06 Dec - 15 Dec United direct
06 Dec - 16 Dec United direct
06 Dec - 17 Dec United direct
28 Dec - 11 Jan United
27 Dec - 02 Jan Aeromexico
26 Dec - 02 Jan Aeromexico
25 Dec - 02 Jan Delta
27 Dec - 02 Jan United direct
25 Dec - 02 Jan United direct

Also check the deals for one-way flights from Washington to Cancun in December.

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